411252321521 has 4 divisors (see below), whose sum is σ = 411403910052. Its totient is φ = 411100732992.

The previous prime is 411252321503. The next prime is 411252321523. The reversal of 411252321521 is 125123252114.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 338101546225 + 73150775296 = 581465^2 + 270464^2 .

It is a cyclic number.

It is not a de Polignac number, because 411252321521 - 2¹⁸ = 411252059377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (411252321523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75790196 + ... + 75795621.

It is an arithmetic number, because the mean of its divisors is an integer number (102850977513).

Almost surely, 2^411252321521 is an apocalyptic number.

It is an amenable number.

411252321521 is a deficient number, since it is larger than the sum of its proper divisors (151588531).

411252321521 is a wasteful number, since it uses less digits than its factorization.

411252321521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151588530.

The product of its digits is 4800, while the sum is 29.

Adding to 411252321521 its reverse (125123252114), we get a palindrome (536375573635).

The spelling of 411252321521 in words is "four hundred eleven billion, two hundred fifty-two million, three hundred twenty-one thousand, five hundred twenty-one".